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2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)最新文献

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Installation of 100 MW Concentrated Solar Power Plant in Lebanon: A Comparative Study Between Linear Fresnel and Dish-Stirling 黎巴嫩100mw聚光太阳能电站的安装:线性菲涅耳与碟形斯特林的比较研究
Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163845
C. El‐Bayeh, Khaled Alzaareer, Mohamed-hamza Laraki, B. Brahmi, A. Kaymanesh, Sadaf Rahimi Far, I. Mougharbel, U. Eicker
Our study consists of analyzing and comparing the Linear Fresnel system and the Parabolic Dish-Stirling system with the aim of installing a 100 MW concentrated solar power plant in Lebanon, a region in the Middle East with abundant solar radiation. The comparison is done in both technical and economic aspects, in which both systems are evaluated for a possible transition from fossil fuel to solar energy. The variation of the temperature and solar radiation parameters will enable us to measure the performance of each system.
我们的研究包括分析和比较线性菲涅耳系统和抛物面碟形斯特林系统,目的是在黎巴嫩安装一个100兆瓦的聚光太阳能发电厂,黎巴嫩是中东地区太阳辐射丰富的地区。在技术和经济两方面进行了比较,评估了两种系统从化石燃料向太阳能过渡的可能性。温度和太阳辐射参数的变化将使我们能够测量每个系统的性能。
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引用次数: 1
Model Predictive Control and Optimal Cost for A Grid-Connected Photovoltaic/Wind/Battery System 并网光伏/风能/电池系统的模型预测控制与最优成本
Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163878
Meryeme Azaroual, M. Ouassaid, M. Maaroufi
In this study, a robust model predictive control (MPC) approach is developed for a photovoltaic (PV)-wind turbine (WT)-battery system connected to the main grid with taking the advantage of the time of use (TOU) electricity tariff. By applying the proposed energy management strategy, customers can reduce the cost of energy consumed from the utility grid while earning from the selling of renewable energy sources (RES) and energy storage to the grid. Besides, the evaluated system is exposed to an external disturbance on PV, WT and load demand, therefore, to demonstrate the effectiveness and robustness of the proposed control the model is compared with the open loop strategy. The simulation results confirm that the MPC approach can tackle the problem successfully with optimal power flow and greater energy and cost savings.
在本研究中,开发了一种鲁棒模型预测控制(MPC)方法,用于光伏(PV)-风力涡轮机(WT)-电池系统连接到主电网,利用使用时间(TOU)电价的优势。通过应用所提出的能源管理策略,客户可以减少从公用电网消耗的能源成本,同时从出售可再生能源(RES)和向电网储存能源中获利。此外,被评估的系统暴露在PV, WT和负载需求的外部干扰下,因此,为了证明所提出的控制模型与开环策略的有效性和鲁棒性,将模型进行了比较。仿真结果表明,MPC方法可以成功地解决这一问题,并具有最优的潮流和更大的能源和成本节约。
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引用次数: 0
Enhancing Small-Signal Stability of Intermittent Hybrid Distributed Generations 提高间歇性混合分布式发电系统的小信号稳定性
Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163597
O. A. Ajeigbe, J. Munda, Y. Hamam
The variability of large-scale photovoltaic/wind hybrid distributed generation power integrated into the distribution system causes persistent system oscillations. The oscillations result in serious small-signal stability issues when these distributed generation units are not adequately optimised and the network dynamic variables are unconstrained as seen in the existing renewable power allocation planning works. In this paper, planning and design of optimal allocation (sizing, placement) and timing of intermittent renewable energy hybrid distributed generations such as photovoltaic and wind is being investigated with the ultimate goal of maximising the renewable power generated and absorbed into the distribution network within the required small-signal stability level at a minimum net present value of total cost. The problem is formulated as a stochastic mixed integer linear program where variables related to small-signal stability are constrained. The paper also evaluated the impact of these renewable generation output power variability on the small-signal stability of the IEEE-24 bus test system using eigenvalues analysis. The results indicate a profound improvement on the small-signal stability of the network, an increase in the quantity of renewable power absorbed and a significant reduction in the costs of emissions and electricity.
大型光伏/风力混合分布式发电系统的变异性会导致持续的系统振荡。在现有的可再生能源分配规划工作中,当这些分布式发电机组没有充分优化,网络动态变量不受约束时,振荡会导致严重的小信号稳定性问题。本文研究了间歇性可再生能源混合分布式发电(如光伏和风能)的规划和优化分配(规模、布局)和时间安排,最终目标是在所需的小信号稳定水平下,以最小的总成本净现值最大化可再生能源的发电和并网吸收。该问题被表述为一个随机混合整数线性规划,其中与小信号稳定性相关的变量被约束。本文还利用特征值分析方法评估了这些可再生能源发电输出功率的变化对IEEE-24总线测试系统小信号稳定性的影响。结果表明,电网的小信号稳定性得到了显著改善,可再生能源的吸收量增加,排放和电力成本显著降低。
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引用次数: 0
Grid connected Photovoltaic System Based on SPUC9 Inverter 基于SPUC9逆变器的并网光伏系统
Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163829
H. E. Ouardi, A. E. Gadari, Y. Ounejjar, K. Al-haddad, S. Alibou
This paper describes a grid connected photovoltaic system while using single phase multilevel inverter, the chosen topology is Split Packed-U-Cells inverter (SPUC), this application proved that the SPUC inverter can be used in the single phase grid connected applications generally and in the renewable energy applications particularly. It is characterized by the fact that it gives nine levels with only seven switches and two capacitors as it is able to generate sinusoidal AC current with a total harmonic distortion that meets the standards of the injection on the grid without using filters. A Pulse-Width Modulation (PWM) control technique is developed to balance capacitors in open loop condition. After the production of electrical energy by the PV array; a maximum power point tracking (MPPT) algorithm is performed to generate the maximum power to the grid. The proposed system was verified by simulation in MATLAB/Simulink to prove the efficiency of the proposed system.
本文介绍了一种采用单相多电平逆变器的并网光伏系统,所选择的拓扑是SPUC逆变器(Split - packer - u - cells逆变器),该应用证明了SPUC逆变器可以广泛应用于单相并网应用,特别是可再生能源应用。它的特点是它只需要7个开关和2个电容器就能产生9个电平,因为它能够产生正弦交流电流,其总谐波失真符合电网注入的标准,而无需使用滤波器。提出了一种开环平衡电容的脉宽调制(PWM)控制技术。电能生产后由光伏阵列;采用最大功率点跟踪(MPPT)算法向电网输出最大功率。在MATLAB/Simulink中对系统进行了仿真验证,验证了系统的有效性。
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引用次数: 2
A New Approach for Optimal Sizing of Photovoltaic Pumping Systems for Irrigation 光伏灌溉抽水系统优化规模的新方法
Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163869
Asmae Hafian, M. Kabbaj, A. Abouabdillah, M. Benbrahim, A. Bouazi
The autonomy of the photovoltaic pumping system and the need for water irrigation are the most demanding criteria that can only be satisfied by the reliability of the installation, which depends essentially on the size of the system components. In this regard, this paper presents an approach to optimize the element size of photovoltaic water pumping systems. This approach ensures the satisfaction of the water demand throughout the irrigation period. It is based on several criteria for optimal sizing including the characteristics of panels, sites, and also crops. A case study of the Fez-Meknes region in Morocco is selected to apply the optimal sizing approach to ensure its effectiveness.
光伏抽水系统的自主性和灌溉用水的需求是最苛刻的标准,只能通过安装的可靠性来满足,这主要取决于系统组件的大小。为此,本文提出了一种优化光伏水泵系统元件尺寸的方法。这种方法保证了整个灌溉期的用水需求。它基于几个最佳尺寸标准,包括面板、场地和作物的特征。选择了摩洛哥菲斯-梅克内斯地区的案例研究,以应用最佳规模方法以确保其有效性。
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引用次数: 4
Design Considerations for Photo-Bioreactors: A Review 光生物反应器的设计考虑:综述
Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163888
Rayan Hijazi, Jihane Rahbani Mounsef, H. Kanaan
Microalgae cultivation for energy production has gained a great interest in the past few decades in view of the increase in Green House Gas (GHG) emission and the global climate changes. The main challenge of producing microalgal based biofuels is to produce sufficient amount of biomass at minimal costs and at high efficiencies. The reason why engineers have examined and developed new technologies for the production of microalgal biomass. In this work, different types of photo-bioreactor systems for microalgae cultivation exploited in literature are classified and evaluated. Moreover, the main design considerations of a photo-bioreactor (surface-to-volume ratio, optimal diameter and length for tubular photobioreactors, mixing process, orientation and inclination, light and CO2 supply) to provide a controlled environment in order to achieve optimal growth and product formation of microalgae are listed and discussed thoughtfully.
近几十年来,随着温室气体排放的增加和全球气候的变化,微藻的能源生产得到了极大的关注。生产基于微藻的生物燃料的主要挑战是以最低的成本和高效率生产足够数量的生物质。工程师们研究和开发生产微藻生物量的新技术的原因。本文对文献中开发的不同类型的微藻光生物反应器系统进行了分类和评价。此外,还对光生物反应器的主要设计考虑因素(面容比、管式光生物反应器的最佳直径和长度、混合工艺、方向和倾角、光照和CO2供应)进行了详细的讨论,以提供可控的环境,实现微藻的最佳生长和产物形成。
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引用次数: 2
Performance enhancement of phase change material based heat storage systems using multiple entries reservoir 基于相变材料的多入口储热系统的性能增强
Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163839
K. Sandy, Maatouk Chantal, Khatounian Flavia, Khoury Khalil
This paper reviews different structures for thermal energy storage system by the mean of solar energy for domestic water heating. The various configurations described in literature are characterized by having a single entry to the phase change material (PCM) reservoir for one or multiple types of PCMs. These configurations are presented and compared to the proposed ones aimed at the enhancement of the global system performance in order to predict the best system one. Simulation results show that the storage efficiency can be improved by using a reservoir with multiple entries since it improves the storage efficiency in different seasons. It also shows that the use of independent PCM stocks is even more effective than the connected ones and contributes to a higher storage efficiency. Therefore, the multiple entries reservoir is shown as a promising technique to override the intermittency drawback of solar energy encountered in the solar system compared to the single-entry tank.
本文综述了利用太阳能供热生活用水的蓄热系统的不同结构。文献中描述的各种配置的特点是对于一种或多种类型的相变材料(PCM)具有单个进入相变材料(PCM)储层的入口。提出了这些配置,并与旨在提高系统整体性能的建议配置进行了比较,以预测最佳系统配置。仿真结果表明,采用多入口水库可以提高不同季节的库容效率,从而提高库容效率。它还表明,使用独立的PCM库存比连接的PCM库存更有效,并有助于提高存储效率。因此,与单入口储罐相比,多入口储罐是一种有前途的技术,可以克服太阳能在太阳能系统中遇到的间歇性缺点。
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引用次数: 1
Predicting performance of an organic tandem solar cell: Effect of defect states density 预测有机串联太阳能电池的性能:缺陷态密度的影响
Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163882
M. Erray, A. Amrani, M. Hanine
In this present work, we report a study of a tandem organic solar cell that consists of two organic cells: poly [2,6-(4,4-bis(2-ethy1hexy1)-4H-cyc1openta[2,1-b;3,4-b ’] dithiophene)-alt4,7(2,1,3-benzothiadiazole)] (PCPDTBTD): 1-(3-Methoxycarbonyl) propyl-l-phenyl [6], [6] C61 (PCBM) (as bottom cell) and (poly(3-hexyl)thiophene (P3HT): 1-(3-Methoxycarbonyl) propyl-l-phenyl [6], [6] C71 (PC70BM) (as top cell) stacked in series configuration. Thus, the effect of defect states density on the performances of the studied device is investigated with wx-AMPS software. We noticed that a high density of defect states can leads to the performances fall of the device. Therefore, the efficiency is decreased by 29.26% due to the increase of defect states density in bottom cell’s active layer. Moreover, the obtained results were validated by those experimentally reported in literature. Indeed, the study of defect states density may have considered as an original approach for getting a predict view about real performances of a tandem organic solar cell. In addition, an optimization study on the thickness of the both active layers based the tandem cell device has been done, which a high efficiency of 7.06% is achieved for d PCPDTBT:PCBM=190 nm and dP3HT:PC70BM=150 nm.
在现在的工作中,我们报告一个串联有机太阳能电池的研究包含两个有机电池:聚[2,6 - (4,4-bis (2-ethy1hexy1) 4 h-cyc1openta (2, 1 b; 3、4 b] dithiophene) -alt4 7 (2, 1, 3-benzothiadiazole)] (PCPDTBTD): 1 - (3-Methoxycarbonyl) propyl-l-phenyl [6], [6] C61 (PCBM)(是底部的细胞)和(保利(3-hexyl)噻吩(P3HT): 1 - (3-Methoxycarbonyl) propyl-l-phenyl [6], [6] C71 (PC70BM)(细胞)堆在系列配置。因此,利用wx-AMPS软件研究了缺陷态密度对所研究器件性能的影响。我们注意到高密度的缺陷态会导致器件的性能下降。因此,由于底层电池有源层缺陷态密度的增加,效率降低了29.26%。所得结果与文献实验结果一致。事实上,缺陷态密度的研究可以被认为是预测串联有机太阳能电池实际性能的一种原始方法。此外,还对基于串联电池器件的两种有源层厚度进行了优化研究,在d PCPDTBT:PCBM=190 nm和dP3HT:PC70BM=150 nm的情况下,效率达到了7.06%。
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引用次数: 0
Desired Reference Model and Observer Based on T-S Fuzzy Control for PMSG Based Wind Energy Conversion System 基于T-S模糊控制的PMSG风能转换系统期望参考模型和观测器
Pub Date : 2020-06-01 DOI: 10.1109/redec49234.2020.9163889
Chakib Chatri, M. Ouassaid
A novel tracking fuzzy controller for Permanent Magnet Synchronous Generator (PMSG) based on Variable Speed of Wind Energy Conversion System (VS-WECS) is the focus of this paper. The fuzzy control is developed in such a way to handle all the states of the PMSG system to follow their optimum references. Firstly, to build the T-S Fuzzy Controller (T-SFC), the model of the generator is used. An observer-based fuzzy is constructed for disturbance rejection and for getting the maximum aerodynamic power. Then, the new law fuzzy controller gains and the fuzzy observer gains are calculated using Linear Matrix Inequality (LMI) approach. In order to evaluate the effectiveness of the advanced controller, the obtained results are compared to those of the Proportional Integral (PI) controller at a wide range of wind speed. Finally, according to the simulation results, the proposed control approach is efficient and gives better performance in transient and permanent regimes.
本文重点研究了一种基于变速风能转换系统(VS-WECS)的永磁同步发电机跟踪模糊控制器。提出了一种模糊控制方法,使PMSG系统的所有状态都遵循其最优参考。首先,利用发电机模型建立T-S模糊控制器(T-SFC)。构造了一个基于观测器的模糊模型来抑制扰动并获得最大气动功率。然后,利用线性矩阵不等式(LMI)方法计算了新律模糊控制器增益和模糊观测器增益。为了评估先进控制器的有效性,在大风速范围内将得到的结果与比例积分(PI)控制器的结果进行了比较。最后,仿真结果表明,所提出的控制方法是有效的,在暂态和永久状态下都有较好的控制性能。
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引用次数: 3
Comparative approach for global solar estimation in four typical Senegalese climatic zones 塞内加尔四个典型气候带全球太阳估算的比较方法
Pub Date : 2020-06-01 DOI: 10.1109/REDEC49234.2020.9163881
Adama Sarr, C. F. Kébé, A. Ghennioui
This work constitutes an approach for the estimation of global solar radiation on 4 climatic zones of Senegal. These are the sites at Dakar, Saint Louis, Tambacounda and Ziguinchor. For this study, data from the Helioclim-3 database of the Meteosat-2 satellite are used as model inputs. For the validation process estimated data and meteorological observations were incorporated into the hourly values. The Clear Sky models of Bird & Hulstrom, Lacis & Hansen and Davies & Hay are simulated. They are based on the determination of the transmission coefficients of the various atmospheric constituents. These coefficients require the availability of current meteorological parameters (relative humidity, ambient temperature, atmospheric pressure) and geographical parameters of the site (latitude, longitude and altitude) and also of the solar position. A comparative study of the results obtained by simulation of the three models showed that the Bird & Hulstrom model gives a better estimate of the global component of solar irradiation. The errors between the values of the meteorological observations and those calculated are small for all 4 sites. The mean square errors are small between 10% and 20% and mean relative errors between 0.1% and 12%. The Bird & Hulstrom model was therefore finally chosen for the establishment of global hourly solar radiation over all four zones. The algorithm structure was built using R software.
这项工作为估计塞内加尔4个气候带的全球太阳辐射提供了一种方法。这些地点分别是达喀尔、圣路易斯、坦巴孔达和齐金肖尔。本研究使用Meteosat-2卫星的Helioclim-3数据库的数据作为模型输入。在验证过程中,估计数据和气象观测数据被纳入每小时值。对Bird & Hulstrom、Lacis & Hansen和Davies & Hay的晴空模型进行了模拟。它们是以测定各种大气成分的透射系数为基础的。这些系数需要现有的气象参数(相对湿度、环境温度、大气压力)和场地的地理参数(纬度、经度和海拔)以及太阳位置的可用性。对三种模式模拟结果的比较研究表明,Bird & Hulstrom模式能更好地估计太阳辐照的全球分量。4个站点的气象观测值与计算值之间的误差都很小。均方误差在10% ~ 20%之间,平均相对误差在0.1% ~ 12%之间。因此,最终选择Bird & Hulstrom模型来建立所有四个区域的全球每小时太阳辐射。采用R软件构建算法结构。
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引用次数: 2
期刊
2020 5th International Conference on Renewable Energies for Developing Countries (REDEC)
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